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Chromatography

Chromatography is a technique based on the fact that different substances can pass through a stationary system at different speeds. There are many different types of devices that use chromatography to analyse and separate substances.

Beckman DU-65 UV/Vis Scanning Spectrophotometer 200-900nm Wavelength Scan-cover
Beckman DU-65 UV/Vis Scanning Spectrophotometer 200-900nm Wavelength Scan

Manufacturer: Beckman Model: DU-65 UV/Vis Spectrophotometer P/N: 120651 S/N: 4310288 Description: Be (more)ckman Coulter DU-65 uv-vis spectrophotometer. The Beckman DU-65 is an  instrument that combines optimized wavelength scanning with step-programmable capabilities and brings self contained versatility and productivity to the laboratory. The  basic operation can be mastered in seconds with time saving features like  storage of calibrations and auto-scaling of scans. With its Plug in Soft-Pacs, repeated  analyses can be produced at the touch of a button with a variety of functions such as linear and non-linear calibration curves, wavelength scans, kinetic measurements,  and gel-scans. These modules are available for various applications such as protein assays, DNA purity, tablet dissolution rates, and performance validation. No need of software or anything else - very comfortable wavelength scans with  transmission and absorbance with the printer on top! Specifications: Operating Principle: Double beam spectrometer for the UV/VIS region, with  microcomputer electronics, keyboard entry and vacuum fluorescence display.Monochromator: Holographic concave grating with 1053 lines/mm.Radiation: Prealigned Deuterium and Tungsten halogen lamps with automatic lamp  switching.Wavelength: 200 nm – 900 nm.Scanning Speed : 500 or 750 nm/ min selectableStray Radiation: Measured with a 2 sec response time< 0.03 %T at 220 nm< 0.02 %T at 340 nm, 370 nm.Wavelength Accuracy: +- 0.3 nm at Deuterium peak 656.1 nm.Reproducibility: +- 0.1 nm.Spectral Slit Width: 2 nm.Photometric Accuracy: +- 0.005 A at 1 A (measured with NBS 930 filters).Reproducibility: +- 0.002 A at 1A.Range: -3 to +3 A.Stability: < 0.0003 A/h (at 500 nm, 1 sec response time, after warmup).Baseline Stability: +- 0.001 A (200-900 nm at 0 A, 2 sec response time, 240  nm/min scan speed.Noise: < 0.0003 A (at 0 A, 500 nm, 2 sec response time) All Intelligence in the Instrument with direct keyboard input. . No need for  external PC, Software or anything else - very comfortable wavelength scans with  transmission and absorbance with the printer on top giving you direct print-outs  of any made scan. SEE PHOTO Items delivered: - Beckman DU-65 UV/Vis Spectrometer- Epson FX-850 (new ink ribbon installed)- Performance Validation Soft-Pac Module (596716)- Memory Pac Module (598286)- Quant II Soft-Pac Module (598288- Beckman Instruction Manuals German & English- Connection and Power Cords- Spare Lamp The spectrometer DU-65 is in good cosmetic condition and 100% functional tested.  Passes selftests and runs wavelength scans very smooth.

€1,300.00 ex VAT
€1,547.00 incl. VAT if applicable
Germany
chromatography data systems
Waters 2487 Dual Dual-Wavelength Absorbance Detector DAD UV Vis VWD 2695 HPLC-cover
Waters 2487 Dual Dual-Wavelength Absorbance Detector DAD UV Vis VWD 2695 HPLC

Manufacturer: Waters Model: 2487 Dual Absorbance Detector (DAD) Description: The Waters 2487 Dual-Wa (more)velength Absorbance Detector is the most sensitive and versatile absorbance detector for HPLC. Designed to provide the highest performance in UV/Vis detection, the 2487 detector offers the superior sensitivity required for detection of minor impurities, with the linear dynamic range to simultaneously quantitate major and minor components for both routine and complex applications. It is a two-channel, tunable, ultraviolet/visible (UV/Vis) detector designed for high-performance liquid chromatography (HPLC) applications. Operates from 190-700nm. This detector features a patented TaperSlit flow cell ensuring the highest sensitivity while maintaining optimal spectral performance. Features: - Stand-alone programmability- Stores up to 10 user-defined programs (or methods) consisting of up to 16 programmable timed events and 2 threshold events each. Single or dual wavelength.- Monitors absorbance at one or two discrete wavelengths.- Wavelength verification reference -Ensures wavelength accuracy.- Automatic second order filter -Automatically engaged for wavelengths 370 nm and greater and removed for wavelengths 369 nm or less.- Spectrum scan and storage -Supports spectrum scan, display, subtraction, storage, and playback, in addition to standard tunable absorbance and UV/Vis functionality.- Cuvette qualification.- Facilitates qualification of the detector by insertion of a standard in a cuvette without breaking any fluidic connections. Waters qualification kits are available in cuvette form to support this feature. This feature also allows you to use the 2487 Detector as a benchtop spectrophotometer.- Cuvette sample analysis.- Allows the spectrum of any sample placed in the cuvette to be recorded.- Method editing and storage -Supports basic method programming, storage, and retrieval from the front panel.- Full diagnostic capability -Supports built-in diagnostic tools to optimize functionality and performance. Specifications: Electrical requirements and power supply:- 100-240 V- 50/60 Hz- 145 VA- F 3.15A / 250V Items delivered: - Waters 2487 Dual Absorbance Detector (DAD) Condition: The Waters 2487 Dual-Wavelength Absorbance Detector in very good cosmetic as well as working condition. It is fully functional being 100% functional tested. It is ready to be used. Buy with confidence!

€1,800.00 ex VAT
€2,142.00 incl. VAT if applicable
Germany
hplc detectors, hplc equipment other
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